🐛 disable skip dimensions when image missing

package.json

@@ -1,6 +1,6 @@
 {
   "name": "graphfx",
-  "version": "0.0.11",
+  "version": "0.0.12",
   "description": "Graph image processing pipeline",
   "main": "src/index.js",
   "scripts": {

src/nodes/Disable.js

@@ -26,6 +26,9 @@ export default class Disable extends Node {
     async _update() {
       if (!this.in.disabled.value) {
         this.out.image.value = this.in.image.value;
+        if (!this.out.image.value) {
+          return;
+        }
         if (this.out.width.value !== this.out.image.value.width) {
           this.out.width.value = this.out.image.value.width;
         }